1220456116 has 12 divisors (see below), whose sum is σ = 2329961760. Its totient is φ = 554752760.

The previous prime is 1220456101. The next prime is 1220456201. The reversal of 1220456116 is 6116540221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13868776 + ... + 13868863.

It is an arithmetic number, because the mean of its divisors is an integer number (194163480).

Almost surely, 2^1220456116 is an apocalyptic number.

It is an amenable number.

1220456116 is a deficient number, since it is larger than the sum of its proper divisors (1109505644).

1220456116 is a wasteful number, since it uses less digits than its factorization.

1220456116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27737654 (or 27737652 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1220456116 is about 34935.0270645380. The cubic root of 1220456116 is about 1068.6628757176.

Adding to 1220456116 its reverse (6116540221), we get a palindrome (7336996337).

The spelling of 1220456116 in words is "one billion, two hundred twenty million, four hundred fifty-six thousand, one hundred sixteen".